Tiling patterns, Photoshop

[MindBrain]

Hello, How can I preview how a graphic (or portion of a graphic) will appear as a background tile (in html, repeated x, y or both) in Photoshop? Do I have to save it first, put it in the html to see it? Do I have to manually copy it and tile it in PS to see it? Is there an easier way? I'd like to be able to isolate a portion of a graphic, preview the tile, and shift it up or down to get the best tiled result. Thanks

 

[&Ingonyama]

In photoshop select the area you want as the repeating pattern, then go to Edit > Define brush preset. Give it a name and open a new document and select the paintbucket tool. Make sure its set to "pattern" and not "forground" (in the top bar). I don't know if there's a way of previewing it while your selecting..